Lancashire's last-eight tie against Somerset here in 2009 was washed out on four successive days before the visitors won cricket's version of a penalty shootout 5-1 to advance to Finals Day.

There is now a reserve day on Saturday, with the clash due to start at 14.00 and the cut off for a start at 20.57.

If the weather forecasters are correct and the rain continues to fall, a decision will be taken between the two counties and the England and Wales Cricket Board as to whether there is a bowl out on Saturday or they move it into a second reserve day on Sunday.

Of the chances of the match going into Sunday, umpire Peter Hartley said: "It is not set in concrete, there is still room for negotiation. But the club (Lancashire) would like to get it finished on Saturday.

"There are certain regulations about playing on the ground so close to the Test match beginning."